This collection of six, simple, quick-start tutorials will help you learn how to use V-Ray Next for SketchUp — and give your renders a boost in no time at all.

How to Use Ruby Scripts in Sketchup. If your business involves rendering 3D drawings or sketches of objects such as buildings or floor plans, you might know about Google SketchUp.

For a free option, you can try Kerkythea. It's a freeware renderer with a Sketchup plugin available and can put together some pretty decent renders.